Disclaimer: I acknowledge that what I am doing is illegal. And that disclaimers serve no other purpose.
A Deck of Those
Every now and then, after a battle or a training session, he'd ask her: "How many?"
She'd think for a moment, counting how many decks he had gone through since the last time he asked and say something like, "Sixteen," or "Thirty nine."
According to his explanations—and he had a lot to say on the subject of his playing cards—he was the joker. Both jokers, actually, the red one and the black one. His trademark was the Ace of Spades. The joker, Rogue accepted without any eye rolling or quips, since it did fit him, but having a trademark card made no sense. He used them all. Wouldn't it make more sense for playing cards in general to be his trademark?
That sort of talk made him huff like a child.
The King of Hearts he liked to use first, to make his introduction. Rogue smacked him for that.
The Queen of Hearts was his lucky lady, who he always saved for last and was always his saving grace. She said she could use a deck of those.
One day as they exited the Danger Room, Gambit asked, "How many?"
She mentally counted and after a moment said, "Fifty one."
He'd gone through about a deck and a half in training that day, produced the lonely Queen of Hearts from the finished deck and presented it to her. "Got yo'self a deck o' dose, chérie."
Later, she sandwiched her fifty two Queens between a black and red joker.